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vendor/sebastian/comparator/src/NumericComparator.php

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+<?php declare(strict_types=1);
+/*
+ * This file is part of sebastian/comparator.
+ *
+ * (c) Sebastian Bergmann <sebastian@phpunit.de>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace SebastianBergmann\Comparator;
+
+use function abs;
+use function is_float;
+use function is_infinite;
+use function is_nan;
+use function is_numeric;
+use function is_string;
+use function sprintf;
+use SebastianBergmann\Exporter\Exporter;
+
+final class NumericComparator extends ScalarComparator
+{
+    public function accepts(mixed $expected, mixed $actual): bool
+    {
+        // all numerical values, but not if both of them are strings
+        return is_numeric($expected) && is_numeric($actual) &&
+               !(is_string($expected) && is_string($actual));
+    }
+
+    /**
+     * @throws ComparisonFailure
+     */
+    public function assertEquals(mixed $expected, mixed $actual, float $delta = 0.0, bool $canonicalize = false, bool $ignoreCase = false): void
+    {
+        if ($this->isInfinite($actual) && $this->isInfinite($expected)) {
+            return;
+        }
+
+        if (($this->isInfinite($actual) xor $this->isInfinite($expected)) ||
+            ($this->isNan($actual) || $this->isNan($expected)) ||
+            abs($actual - $expected) > $delta) {
+            $exporter = new Exporter;
+
+            throw new ComparisonFailure(
+                $expected,
+                $actual,
+                '',
+                '',
+                sprintf(
+                    'Failed asserting that %s matches expected %s.',
+                    $exporter->export($actual),
+                    $exporter->export($expected)
+                )
+            );
+        }
+    }
+
+    private function isInfinite(mixed $value): bool
+    {
+        return is_float($value) && is_infinite($value);
+    }
+
+    private function isNan(mixed $value): bool
+    {
+        return is_float($value) && is_nan($value);
+    }
+}